Buffer for doors.



T. M. LAVELLE.

BUFFER POR DOORS.

APPLIUATION FILED huma, 1913.

1,073,253. Patented sept. 16, 1913.

@MCM/MAP y UNITED STATES BUFFER; FR` DOGRS Specication of Letters Patent.

ratenteesept. ie, raie.

applicati@ nea January 2e, ma.. semaine 743,794'.

Z'oall whom it may concern Be it known. thatLTxioMAs M. LAVELLE, af citizen of the United States, residing at Pottsville, in the county 'of Schuly-lnll and State of- Pennsylvania, have invented cer.- tain new. and usetullmprovements 1n Buffersfor Doors; and I do declare the iollow'- ing. to. beafull, clear, andfexact descrlption of the invention,l such as will enable others skilled inthe art to-whichitapperbains to make and' use the'same.

This invent-ion. 'relates toimprovementsin buffers for doorsand partieularlyftobuffers for the doors of automobiles, carriages,- boats andthe like.

One object` of the invention is= to provnle a buffer` ofthis character having means: whereby. the same may be adjusted without removal. from the door-whenthe projecting. portion.- of the butler has: been flattenedt or Worn down, thus keeping thedoor tight and` preventing the samel from rattling.

Another. object istoY providera. device. of

\ this character'which. willbe simple, strong,

dur-able vand inexpensive' in. construction,

' efficient: and. reliable in operation, and inwhich the elastic plug thereof: may be read ily removed and; renewed when wornout.

\Withthese and other objects in view, the invention` consists. of"- certain` novel features of construction, and the combination and. arrangement ofi parts as -will be more fully described andl claimed..

In. the accompanying drawings Figure. 1 is a horizontal sectional View of one of'the jambeandl the adjacentedge oi an automobile door-showing my improved buiten ap.- plied. thereto and. in. sectrion; Fig: 2. is. a. front view of: a. portion. of the door jamb and of the buffer Fig; 3, is a. vertical sectionalview of. the 'amband buftertaken on; the line 3 3. of Fig; 1;. Fig. 4 is a similar entirely View showing the manner in' which the buffer blocks are engaged with and removed trom. theirl casings;: Fig; 5 isa detail per-v spectiveview of.y the attachingplates for the buler` blocks; Fig.-. 6- is a. vi'evv` similar' to Fig. 3i showing aslightly modified form of the invention.

By reference to the accompanyin cut ity Willbe seen. that my improved bu .er com? prises av casingl 1, which. may be of any suitable shapeto, conform to the. configura-4 tion or shape of. the door jamb to which the saine isto be appled,.sa1d casing being,

mortised' into thejemb and. having formed thereon suitable attaching flanges 2 providedwitfh screwv holes-for receiving the fastening screws whereby the casing is secured in position on the-door jamb. In the outer side of the main or body portion of the casby. a centrally disposed! passage as shown.

Irecess 34 in the body of the, casing is the .builer block. 6 whichv is-preferably formed ofV rubber but which. may be formed of any suitable resilient or elastic material which will form a cushionagainst which the door lis. closed' and. which. will hold the door against. rattling. The buffer block 6 is ad- 'ljilstably held imposition in the recess 3 of 'the casingby. a bolt or stud 7 which, has-a 5 i'n' the casing as shown. The inner end .of the studi7 is engaged; with a. circular rebl'ock 6. and in the stud`7 nearits inner end and adjacent to the inner side of the block 16 is formed. an annular recess 9 With which are'engaged' the forked or bifurcated ends of block and' stud attaching plates 10. The forked or biiurcated. ends of the plates are :engaged with the'recess 9- of the stud from opposite directions and overlap each other are bent outwardly at right angles andv then inwardly to form right angular block gripping lugs 11' which engage' notches 12 formed i'n the. ends of the block. as clearly indicated in Figs. 3, 1 and 5 of the drawings. By forming. the. plates 10 and engaging the same` with! the recess 9 in the stud 7 thel latte'r Lis swiveled to the block 6 and when the gripping lugs 1l of the plates are engaged with the notches 12 in the block andthe latter insertedv in the recess 3 of the casing, said plates will be heldE-in position 'for connecting, the stud. or bolt with. the

block.

The block (i is of'suiiicient width. or thickness to project toa suitable distance beyond the outer. side. of thecasing. to prevent the door from coming into engagement with the. jamb and by means of the stud. 7 it will be seen that when the projecting portion of the block becomes flattened, or Worn, olf from' the continued closing4 of the door the bolt or stud may be turned in the proper direcing is formed a recess 3 and`- in its innerl side a recess 4sa1d recesses being connected.

Slidably' andadj nstably. engaged Withv thescrew theaded engagement with the passagev cess 8 formed inthe-lnnerside of the bulerl as shown. The outer ends: of the plates 10- tion to further project the, block and tothereby hold the door against rattling which would occur when the projecting end of the block has worn olf or become Iiattened. This adjustment also obviates the necessity of removing the casing and securing therein a new buffer block as is necessary in the ordinary form of door buffers now in use.

After the bolt or stud has been adjusted to bring the buffer block tothe desired position the bolt is locked for holding the block in this position by a jamb nut 13 which is screwed up on the bolt and against the inner wall of the recess 4t in the inner side of the casing as shown. The outer end of the stud projects a slight distance beyond the inner side of the door jamb and is provided 'with a reduced squared end 1.4 to receive a key `or wrench for turning the bolt, said wrench being also preferably adapted for engaging and turning the jamb nut 13.

By attaching the buffer block 6 to the cnd of the bolt or stud 7 as herein shown and described, it will be seen that when the block has become worn to such an extent as to prevent further adjustment, it is simply necessary to screw the bolt outwardly to a suicient extent to permit the inner end of the block and the fastening plates to clear the outer end of the recess 3, whereupon the plates may be slipped outwardly in opposite directions to a sulicient extent for .disengaging the bifurcated ends thereof from the recess 9 in the bolt or stud whereupon the block may be disengaged from the end of the bolt-and a new block placed in p0- sition thereon and fastened by the plates in the manner described.

In the last figure of the drawings is shown a sectional view of a slightly modified form of thc buffer wherein in addition to the adjusting stud or bolt, I also provide short coiled springs 15 for forcing the block outwardly when the bolt is turned in the proper directlon, said springs being preferably disposed in short sockets 16 formdin'the main or body portion of the casing on each side of the threaded passage therein, and having their outer ends engaged with the outer block attaching plate 10 as shown.

From the foregoing description taken in connection withv the accompanying drawings, the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Various changes in the form, proportion and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advan,

tages of the invention as claimed.

Having thus described my invention, what I claim is:

l. A buffer for doors comprising a casing adapted to be secured in the frame of the door and having therein a block receiving recess, and a'threaded passage communieating with said recess, a buffer. block hav-l ing a sliding engagement with the block receiving recess of the casing and a block adjusting stud having a threaded engagement with the passage in said casing, and a swiveled connection with said buifer block adjustably engaged with said block receiving recess, an adjusting bolt having a threaded engagement with the passage. in said casing, and a detachable swiveled connection with said block, and a 'jam nut adapted to be screwed onto said bolt and into engagement with the inner wall of said nut receiving recess whereby the bolt is locked for holding the buffer block in its adjusted position.

3. A buffer for doors comprising a casing adapted to be secured in the door jamb and having therein a block receiving recess and a threaded passage communicating therewith, a resilient buffer block having in its inner side a circular recess and in its ends transverse notches, an adjusting bolt adapted to be screwed int said threaded passage and having its end engaged with the circular recess in the buffer block and provided with an annular recess, bolt and block attaching plates having bifurcated inner ends adapted to be overlapped and engaged with the annular recess in Ithe end of said bolt, right angular gripping lugs on the outer ends of said plates to engage the transverse notches in the ends of the buffer block whereby the latter is fastened to the bolt andthe boltl swiveled to the block to permit the latter to be projected when said bolt is screwed inwardly in thev threaded' passage of the casing. c

4. A buffer for doors comprising a casing adapted to be secured in the door jamb and having .therein .a block receiving recess and a threaded passage communicating therelwith, a resilient buffer block havin in its inner side a circular recess and. in its ends transverse notches, an adjusting bolt adapted to be screwed into said threaded passage and havin its end engaged with the circular recess in the buffer block and provided with an annular recess, bolt and block attaching plates having bifurcated inner ends1 1,073,258 ffm screwedA inwardly in the threaded passage ln testinlony whereof l have hereunto set of the casing,l and springs arranged in the mjy-hand 1n presence of two subscribing Witoasing and engaged w'th the bolt attachmesses.

ing plates and inner en of the buffer bleek THMAS M. LAVELLE. 5 whereby the latter is forced outwardly when Witnesses:

the adjusting bolt thereof is turned in the C. J. DUBY,

proper direction. JOHN M. NAN. 

